Grain-separator.



PATENTBD SEPT. 18, 1905.

s. DUNKBLBBRGE-R. GRAIN SBPARATOR.

` APPLICATION FILED AUGl, 1905.

2 SHEETS-SHEET 1.

2 SHEETS-SHEET 2 l PATENTBD SEPT. 18, 1906. u DUNKELBBRGER. 01mm SEPARATOR. APELIGATION FILED AUG.1,1905.

No. SSL

@mmm@@@@mm@@ @@@mwmgmg UUDwUovoavD 0O0n00-uuu entran siagne Specification of iettere Patent.

Patented Sept. 12.8, 1996.. v

pplicationled August l, 1905. [Serial No. 272.248.

To all whom it vmay concern:

Be it known that I, SAMUEL DUNKEL- BERGER, a citizen of the United States, resid-V ing at Newton, .in the county of Harvey and State of Kansas, have invented a new and useful Grain-Separator, of which the `following is a specification.`

The invention relates to improvements in vmeans for separating rain from straw.

One of the principa objects is -to rovide novel means for generating and de ivering an effective blast of air through the straw as the same leaves the threshing mechanism in order tothoroughly loosen and agitato said .tures of' the invention.

straw, thereby securin a .more thorough separation of the grain t erefrom.

Another important object is to provide novel overshot threshing mechanism which will thoroughly threshstraw and deliverit.

to the separating means, will permit the use Of a low feeder, and is provided with mechanism `that will prevent small 'solid wads or bundles of grain being jerked into and slu ging the cylinder, said means being a justable to the different grades. and conditions of grain. l A The referred embodiment of the invention is i lustrated in the accom anying drawings and is described in the fol owing specification. An inspection of the claims will, however, clearly indicate that said invention is notlimited solely to the structure herein disclosed'. f

In the drawings, Figure l vertical lon.

gitudinal sectional view through a portion of a grain-separator embodying the novel fea- Fig. 2 is a crosssectional view through the threshing-cylinder and. mechanism associated therewith. Fig. 3 is a horizontal sectional viewtaken substantially on the `line 3 3 of Fig. 1 and showing atop plan view of the concave and retarder. Fig. 4 is a detail sectional view through the gear-wheel and its mounting, which is carried by the shaft.' Fig. 5 is a de.- tailview in elevation of the gear-wheel as- '.sociated with the fan'and showing one of the clutch members. Fig. 6 is a detail view of the associated clutch member carried by the fan. Fig. 7,isr a detail view in elevation of the adjusting means for the concave and retarder. Fi 8 is a detail' perspcctive'view vof one of t e guard-plates of said retarder.

Fig. 9 is a sectional view showing one of the mountings for the cutter-,biere Similar reference-numerals designate cor-.

heads that are in the form of responding parts in all the figures of the I drawings. y

' In the embodiment illustrated a machinecasing iseinployed which includes a frame 10, a deck 11, and side wails 12, the side walls being provided with alined air-iniet openings 1.3. Secured to the opposite sides o' the machine-casing are bearing-supports 1 4, having portions extending across the sin inlet openings 13, which portions are offset, as clearly shown at 15.

Journaled on the' supports 14 and extending through the openings 13 and across the casing is a driving-shaft 16, which projects beyond the supports 14, as shown in Fig. 2, Surrounding the shaft and located within the machine-casing is a fan-casing comprising spider-'frames 17,' having hubs 18and 19, in which the shaft 16 freely rotates. An annular wali 20, connecting the heads, has an opening therethrough forming a. dischargethroat 21. One of the hubs i8 of the fan-casing is extended through the adjacent air-inlet opening 13 of the side wall of the machine and has its outer end fitted into a bearing 22, in which. it is secured a ainst rotation by suitable set screws 23. T e fan-casing is thus positiveiy held against rotation, while the shaft is freely rotatable.

Secured to and rotating with 'the shaft 16 is a threshing member in the form of a cylinder having hubs 24 and 25, the hubfZ being keyed, as shown. at 26, or otherwise secured to the shaft, the hub 25 being ioosely journaled on the fixed hub 1S of the fan-casing These Vhubs are provided with radially-dia posed arms 27, carrying rings 28' at their outer ends, the whole thus forming heads which are connected by'bars; 29, carrying teeth 30, the iront ed 'es or sides of said bars being refera 'ly beve ed, as clearly shown at 31 in ig. 1. Thus it will be seen that the threshing-cylinder is freely rotatable about the fixed fan-casing, that said cylinder is secured to the shaft, and that vthe casing is also mounted on the shaft.

The cylinder, asy

clearly shown in Fig. 1,v is of the overshot type-that is to say, its lowerfportion travels' forwardly and its upper ortion travels rear- Awardly, the reverse of t ie common type of machine.

Supported by the shaft 16 within the fancasing is a ian comprising hubs 32, loose/l journaled upon the shaft inside the hubs of the fan-casing These hubs are provided with radial arms 33, carrying fan-blades 34, that rotate within the casii'ig. It is very desirable, particularly where the threshing-cylinder is of small diameter, to run the fan at a greater speed than the cylinder. accomplish this, suitable gearing is .emplo 7ed, which in the present embodiment is as follows: A bevel-gear 35 is secured to the inner en'd of the extended hub 18 of the fancasing and is thus held stationary Another bevel-gear 36 isloosely journals` 'upon the shaft 16 and is also free to rotate with respect to the fan, this wheel having a clutch member 37, that is in the form of a toothed ratchet,- wheel. The fan has fastened to the end adjacent the gear-wheel 36 a plate 38, on which is mounted another clutch member in the form of a s ring-pressed dog 39, said dog beingpivote upon the plate and having its free end yieldingly urged into engagement with the teeth of the ratchet-wheel. A supporting device inthe form of a collar 4() is mounted upon the shaft 16 between the opposed gear-wheels, said collar having a yoke 41 in which is journaled a third beveled gearwheel 42, ,said wheel meshing with both the gear-wheels 35 and y86, and thus being rotatable with and with respect to the shaft 1 6.

Located over the cylinder is a carrier or support comprising spaced plates 43, pivoted at 'their rear ends, as shown at 44, .their front ends being connected by links 45 with the crank-arms 46 of a rock-shaft 47, suitably journaled on the frame of the machine above links 61, pivoted at their upper ends, as shown the deck. The rock-shaft has a handle-arm 48 disposed adjacent'to a slotted bar 49, through the slot of which is passed a holdingbolt 50, said bolt being carried by the arm 49 and constituting means arm against movement.

are provided with curved-ribs 51, constituting supports for a concave that consists of plates 52, vthe ends of which rest upon said ribs, said plates being provided with suitable teeth 53, cooperating with the teeth of the rl`he plates are held upon the ribs at 5,5, to the'supporting-plates 43. Guidebolts 56 pass through slots 57, formed in the supportinglates 43, and also act as clamps to hold said plates against movement.

For the purpose of feeding the material to the threshing mechanism an endless conveyer-belt 58 is employed, passing about a conveyer-shaft 59, located adjacent to the front side of the cylinder, said conveyer-belt operating beneath. a series of cutter-bars 60.

The rea-r ends of said bars are suspended by at 62, to the frame of the machine and having their lower ends operating in boxes 63, which boxes carry depending slotted ears 64, to which the bars are adjustably fastened, The front portions of the cutters are connected to the usual crank-shaft 67 by similar- In order to j porting-bars 43 and carrying for clamping saidv The spaced bars 43 the cutter-bars ar'e secured by, bolts 66.

These bolts also fasten the keepers 65 to. the ears 64,'as illustrated in` Fig. 9. Beneath the rear end of the conveyer 58 and conveyer-shaft 59 is preferably located a small shakeran 68-7 operated .through the mediun of a bellcrank lever 69, having a link connection 70 with mechanism.

Interposed feeding mechanism and threshing mechanism is a retarder, that is disposedjust in advance of the concave. This retarder consists of an angular shaft 71, journaled in the suphubs 72, that are provided with radial teeth 7.3, Said teeth thus rotating just in advance of the concave above the cylinder and in rear of the cutterbars. Guards for the retarder' consist of a suitable part of the driving between the above-described plates 74, that are angular in form and have their'upper ends narrower than their lower ends, said upper ends being secured'to a cross-bar 75, disposed slightly in advance of and above the retarder, the lower ends being secured to a cross-bar 76, located in rear of the retarder and directly adjacent to the concave.

A grain-pan 77 has its front end located beneath the cylinder and is separated therefrom by a partition 78, said partition having near its front end a grain-passage 79, opening into a pocket 80, formed by the curved upper end of a` downwardly and-rearwardly extending deflector-plate 81, the lower end of which is disposed just above the front end of ICS shown at 84. An apron 85, carried by a supporting-arm 86, is located inder and extends downwardly .toward the grate 82 and straw-carrier. Pivotally mounted above the apron is a bar 87, carrying a grate that consists of a plurality of rearwardly-extending fingers 88, which nfingers are thus movable to different positions with respect to the straw-carrier, as clearly indicated in Fig. A deflectcr-board 89 is pivoted, as shown at 90, in rear ofthe concave and is adjustable to different positions, as indicated in dotted lines. In rear of this strawextending over the straw-carrier and having stopJA or check plates 92 depending therefrom. -This structure,y to father, with the straw-carrier, is fully described in a copend- Serial No.272,914, and no herein to said structure, the

ing application, claims are made same forming part` of the subject-matter of said other application. 1

1n the operation of this apparatus material in rear of the cyl- 1 carrier is a stationary concave-.defiector 91,

'veyer-belt, which carries'l the bundles beneath the cutters, Where thebands are severed, and by having an overshot'threshinU-cylinder the conveyer may be placed very ow upon the machine, thus making it much easier for the workmen to pitch vthe bundles thereupon. As the grain is fed to the cylinder it is continually taken from the top layer and carried into the retarder, which prevents a too great feed into the concave. After the straw passes through said concave it is delivered downwardly and rearwardlyagainst the ad` ustable grate 88, the direction of delivery ein'g controlled to a very material degree by the'deiector 89. During its passage from the concave to the deector it is'moved through the blast of air from the fan, whereby the 'straw is thoroughly agitated and opened, permitting the grain to drop freely therefrom. The apron 85 serves to prevent the air-current and chaff following on aroundV the cylinder; but-all grain and material that are carried around will by centrifugal force pass through the outlet 79 into the pocket v80 and thence gravitate on to the grain-pan.

The adjustment of the concave serves toinsure the proper operation of the machine unl.

der different classes of work. Thus theposition of the concave and retarder can be changed with relation to the cylinder accordingly as the grain is heavy and wet or light direction of movement isthe same 'said cylinder.

'flector is lowered, the latter' and dry. In the former condition, moreover, the deector board or plate 89is ele' vated, so that the straw strikes. the carrierA farther to the rear than when thesaid deposition being preferable in dry grain. l

The arrangement of the fan and casing, together with the driving means for saidfan, is important, as a strong blastpfwairl is. thus maintained outwardly across the barsiand tends to clear the teeth of thecylinder from the straw and prevent its wrapping-'about the cylinder. The inclined sides of the bars, moreover, ,offerv but little resistance. -The speed of thefan can be increased as desired )y varying the relative sizes of the gearwheels, ,and it will be observedin thestruc-A ture as `disclosed that the speed of the fan is not only double thatjof the cylinder, but its as thatl of The clutch mechanism involved in the connection between the shaft and-the fan'is also an importantfeature of the invention, for, as

l is well known, the speed of the threshing-cylinder varies to a very 'm aterial degree. In fact said cylinder is sometimes brought to a complete and sudden standstill. With the fan operating ata high rate of speed and rigidly geared to 4the cylinder-shaft these sudden.'

checks would not only cause great strain upon the mechanism, but would be apt to result in breakage of the gearing or other parts,

kind ls avoided, for if the speed o may In the present structure all danger of this f the cylinder is suddenly reduced the fan can freely rotate'under its own momentum, the dog of the clutch member being movable freely over -theteeth of the ratchet wheel. vA s soon, however, as the cylinder-shaft again reaches the proper speed to drive the fan the dog will again interlock with the -teeth and said fan will be positively driven. Thus it'will be clear that the variation of speed on the part of the cylinder will not in any manner cause improper strains upon the fan and its associated drivin mechanism.

From the oregoing it is thought that the constrction, operation, and many advantages of the herein-described invention will be a parent to those skilled in the art without stood that various changes in the size, shape, proportion, and minor details of4 construction be resorted to Vwithout departing from the spirit o r sacrificing any of the advantages of the invention.

Havingthus described my invention, what ther description, and it will be under- I claim as new, and desire to secure by Letters Patent, isn f 1". In a grain-separator, the combination with va rotary thresliin member 'having a shaft, of a 'casing locate inthe member and having hubs in which the shaft rotates, and a fan located in the casing and driven by the shaft. l

2. In a grain-separator, the combination .with a rotary/threshing member having a shaft, of a casing located in the member and having hubs in which the shaft rotates, means for holding the casing against rotation, anda fan located in the casing and driven by the shaft. 3. In a grain'separator, the combination with a shaft, of a rotary threshing member driven t'hereb Vand surroundingvthe same, a fan located within the member,` and a casing interposed between the member and fan and having a hub'in which the shaft rotates, said hub being interposed between the member and fan.

IOO

' 4. In a grain-separator, the combination with a shaft, of a rotary threshing'member havingl a hub mounted on the shaft, a fan having a hub mounted on the shaft, and a fan-casing interposed between the fan and member and having a hub mounted on the shaft between said fan and member.

5. In a grain-separator, the combination with a shaft, of a rotary threshing member surrounding the shaft and having a hub fixed thereto, a fan located within the member and having a hub mounted on the shaft, and a fan-casing interposed between thefan and member and. having a hub mounted on the lsahaft between the hubs of said fan and memer. I i

6. In a grain-separator, the combination a; cameo with a shaft, 'of a threshing-concave, a rotalings, a shaft supported in the bearings, a

' ltable threshing member cooperating with the threshing-cylinder secured to the shaft withconcave and comprising heads mounted on in the machine-casing, a fan mounted on the the shaft, tooth-bars connecting the heads, a shaft within the c' vlinder, a fan-'casing mount- 5 fan mounted on the shaft within the cylinder, ed on the shaft l ctween the cylinder and fan 7o and a stationary fan-casing mounted on the and having an air-discharge throat, and

shaft and interposed between the fan and means for holding the casing against rotation cylinder, said casin having a dischargewith the shaft. throat that delivers t e air from the fan out- 13. In a grain-separator, the combination 1o wardly across the cylinder tooth-bars. with a shaft, of a threshing-cylinder, a fan 75 7. In a grain-separator, the combination mounted on the shaft, a fan-casing having a with a shaft, of a concave, a rotatable threshbearing through which the shaft rotatably ing-cylinder cooperating with the concave passes, and'means for positively holding the and com rising heads mounted on the shaft casing against rotatable movement on the i5 and toot -bars connecting the heads, a fan shaft. 8o comprising hubs mounted on the shaft and n 14 In a rain-separator, the combination carrying blades, and a fan-casmgcomprising with a sha t, of a threshing-cylinder, a fan hubs in which the shaft loosely rotates, and

mounted on the shaft, a fan-casing having a an annular wall carried by the hubs and inbearing through which the shaft rotatably 2o terposed between the blades and tooth-bars, asses, and means connected to the casing to 8 5 said wall havingI an opening constituting a old the same against turning movement discharge-throat for the air from the fan. with the shaft, said means constituting a 8. In a grain-separator, the combination bearin for the shaft.4 with ay shaft, of a concave, a rotatable thresh- 15. n a rain-separator, the combination 2 5 ing-cylinder cooperating with the concave with a mac ine-casing., of a shaft journaled 9o and comprising hubs with radial arms and thereon,a threshing-cylinder, afan mounted tooth-bars connectin the arms, a fan comon the shaft, a fan-casing having a bearing vrising hubs mounte on the shaft and havthrough which the shaft rotatably passes, and mg radial arms carrying blades, and a fanmeans surrounding the shaft and connecting 3o casin said casing comprising hubs in which the saft loosely rotates, said hubs having radial arms, and an annular wall carried by the hubs and inter osed between the blades and tooth-bars, sai wall being provided with 3 5 `openings constituting a discharge-throat.

9. Inl av Grain-separator, the combination with a sha t, ofa rotatable threshing-cylinder secured directly to the shaft and rotated thereby and therewith, a fan located 'within 4o the cylinder on the shaft, and means mount'- ed on the shaft and interposed between the fan and cylinder for directing the air from said fan. l

10. In a grain-separator, the combination 45 with a shaft, of a rotatable threshing-cylinder secured directly to the shaft and rotated therewith and thereby, a fan located ,within the cylinder, means supported directly on` the shaft and interposed between the fan and 5o cylinder for directing the air from said fan,

and means for holding the said directing means against rotationv with the shaft.

11. In a grain-separator, the combination with a machine-casing, of journal-bearings 5 5` mounted on the opposite sides of the same, a

shaft supported in the bearings, a threshingcylinder mounted on the shaft within the machine-casing, a fan mounted on the shaft within the cylinder, and a fan-casing mounto ed on the shaft between the cylinder and fan. 20. In a grain-separator, the combination 12. In a grain-separator, the combination with bearing-supports, of a shaft extending with a machine-casing having air-inlet opentransversely of said supports, a fa -casing .ings'in its opposite sides, of journal-bearings havinghubs at its ends, means carried by one mounted on the opposite sides of the ma- .of the sup )erts and engaging the adjacent 65 chine-casing and extending across the opcn-' hub for holding the casing against rotation, i

the former against rotation with the shaft.

16. In a grain-se arator, the combination with a shaft, of a t ireshing member carried thereby, a fan mounted on the shaft, a fancasing having a hubin which the shaft ro- 10o tate -*and means enga ing the hub to hold lthe same and thereby t e casing against rotation with the shaft.

17. In a grain-separator, the combination with a fan-casing having a hub, of a fan oper- 105 ating in the casing, and a rotary threshing member having a journal-bearing on the hub of the fan-casing.

18. In a grain-separator, the combination with a fan-casing having a hub, of'a shaft having a bearing in the hub, a fan operating in the casing and driven by the shaft, and a rotary threshing member operated by the shaft and having a journal-bearing on the hub of the fan-casing.

19. In a grain-separator, the combination with a fan-casing having a hub, of means enwaging the hub to hold the saine against rota- ZIdion', ashaft having a bearing in the hub, a fan o erating in the casing and mounted on i2 the s aft, and a rotary threshing-cylinder surrounding the casing, said cylinder being secured to the shaft 'and having a bearing on the hub of the casing. i

the fan-casingand machine-casing to hold 95 senseo With a machine-casing, of spaced bearing supports carried thereby, ashaft extending transversely through the easing and across the supports, al fan-casing having hubs throu h 'which the shaft loosely passes, one of sai hubs being extended te the adjacent bearing-support, means carried by said support and engaging the extended hub to hold the same against rotation, a fan mounted on -the shaft Within the casing and drivenby said shaft, and a threshingeylinder surrounding the casing,said cylinder having hubs, one of Which is secured to the shaft, the other being journaled upon the extended hub ofthe casing.

23. in a grain-separator, the combination with a rotatable threshing member, of a fan rotatably mounted within the saine, and means for effecting the rotation of the member and fan in the same direction and at dif ferent speeds.

24. In a grain-separator, the combination with a shaft, of arotatable t ireshing member carried thereby, a fan loosel mounted on the shaft, and means for rotating the fan on the shaft at higher speed than the threshing member.

25. ln a grain-separatiir, the combination with. a shaft, of a rotatable threshing member carried thcreoy, a fan located within the threshing member, said fan' being loosely journaled on and supported by the shaft, and gearing driven by the shaft and connected to the fan for rotating said fan at a higher speed than the threshing member.

26.. ln a grain-swarator, the combination with rotatable tlneshing member, of a rotatable fan ationary means for directing a blast of ai .irom the fan, and means associated with the member, the 'directing means, and the vfan for effecting the rotation of said fan and member at different speeds.

^ 27. ln a gra-in-srmarator, the combination lfyi/ith a rotatable thresl'iing member, of a rotatable fan jonrnaled within the member,

stationary means for directing a blast of air from the fan, and gearing associated with the member, nthe directing means and the fan. for effecting the rotation of said fan and member at different rates of speed. n

29. in a grain-separator, the combination with a shaft, of a rotatable threshing member .arred thereby, a fan loosely mounted on the shaft Within the member, a stationary faneasing, and gearing associated with the shaft, the casingand the fan for driving said fan from the shaft. l

29. In a grain-separator, the combination With a shaft, of a rotary threshing member carried thereby, Va fan rotatable With respect to the member, a` stationary gear, a gear carried by the fan, and another gear rotatable with and yaround the shaft, said gear meshing with the'stationary gear and the fan-gear.

30. In a grain-separator, the combination with a shaft, of a rotatable threshing member.

carried thereby a fan loosely journaled on the shaft within the member, a stationary gear, a gear carried by the fan, a supporting device secured to the shaft and. rotatable therewith fand a gear rotatable with and rotatable on the support, said gear meshing -With the stationary gear and the fanegear.

31. In a grain-separator, the combination Witha shaft, of a fan-casing having bearings inwhich the shaft rotates, afan loosely journaled on the shaft inside the casing, a gear carried by the casing, a gear carried b y the fan, and a gear carried by the shaft and meshing with said other gears.

32. ln a grain-'separator, the/'combination with a shaft, of a threshing-'cylimler secured 9 thereto, a stationary fan-casing mounted on the shaft and located within the cylinder, a fan loosely journaled on the shaft Within the casing, a supporting device carried by ythe shaft, oppositely-disposed gears carried by the fan and zasingi, and another gear j ournaled on the supporting device and meshing With the i)ppositely-disposed gears.

33. .ln a grain-separator, the combination with a rotatable threshing' member, of a rotatable fan, commondriving means for said fan and member', and a clutch connection between the driving means and fan.

34. In a grain-selmralor, the combination with a Ishaft, of a threshing member and a fan mounted on the shaft, one of the same being loose thereon, and geariiig connecting the shaft and loose member and including a clutch.

35. ln a grain-separator, the combination with a shaft, of a threshing member mounted thereon, a fan loosely associated with the shaft and having a clutch connection there- TOO IIO

with that permits the fan to operate at a greater speed than that of the threshing member'. y

36. ln a grain'-separator, the combination with a shaft, of a threshing member mounted thereon, fanlooscl y journaled on the shaft within thel member,I kand means connectingv to the supporting-plates,

ing connecting the shaft and casing and having a clutch connection with the fan.

38. In a grain-separator, the combination with a shaft, of a casing having hubs in which the shaft rotates, a .threshing-cylinder. secured to the shaft and journaled on' one of the casing-hubs, a fan journaled on the shaft between the casing-hubs, a gcaron one ofthe casing-hubs, a gear having a clutch coimection with the fan', and a gear rotatably mounted on and rotatablewith the" shaft, said latter gear meshing with the first-mentioned gears.

39. In a grainseparator, the combination with a threshing-cylinder,` of spaced pivoted supporting-plates disposed contiguous thereto and having rfbs on their inner sides, con-vV cave plates located between the supporting#4 `lates and bearing-against the `ribs thereof, teeth carried by the concave plates and coacting with the cylinder,` clamp-bars -eX- tended over the concave plates an'd secured and means for ad-l justably fastening the supporting-plates to maintain "the tec-th at 'different distances from the cylinder. l y j 40. In a grain-separator, the combination with a threshing-cylinder, of a concave pivl otally mounted adjacent thereto, and means for adjusting the concave toward and from the cylinder and holding the same in adjusted position, said means includin a rockshaft having crank connections wit the concave, and means for holdingthe rock-shaft. vin different positions.

41. In a grain-separator, the combination with threshing mechanism .including a thresh ing-cylinder,` of .a rotary retarder associated with thcthreshing mechanism, said retarder being adjustable with respect to the thresh-l ingcylinder.

42. In a grainlseparator, the combination. with threshing mechanism including a threshing-cylinder, of a pivotally-supported rotary'l retarder associated with the threshimr iiiecjh-` i. anism, said retarder being adjustable with respect to the threshingmechanism, and means for holding the retarder in adjusted relation.

43. In a grain-separator, the 'combination with threshing mechanism comprising l a threshing-cylinder and a concave coperating therewith and adjustable with respect tol, the cylinder, of the cylinder and adjustable with the concave.

44. In. a grain-separator, the combination with a threshing-cylinder, of a support pivotally. mounted adjacent thereto, a concave carried b thc support, and a retarder also. journals on the pivoted support.

45. In a grain-separator, the combination with an overshot cylinder, of a support. pivotally mounted ther-cover, a concave comprising plates secured to the support and having teeth coi'iperating with the cylinder, a rotary -the cylinder,

a .retarder cooperating with l retarder journaled in the pivotal support in advance of the concave and port to carry the concave and the retarder. toward and from the cylinder.

` 46. In' a grain-separator, the combination with a threshing-cylinder including heads having spaced tooth-bars, saidv bars having beveled sides, of a fan located within the c inder and delivering a blast of air outwa diy across the bars.

47. In a grain-separator, the combination with a threshing-cylinder, of a concave pivotally mounted adjacent thereto, for adjusting the concave toward and from said means including a rockshaft having crank-arms, links connecting the crank-arms and concave, an actuatingarm connected to the rock-shaft, and means for holding the actuating-arm in different positions. i

48. In a grain-separator, the combination with a cylinder, of a pivoted concave coperating therewith, a rotary retarder journ aled on the concave and having teeth, and guards located between the teeth and secured to the concave. j

49. In a grain-separator, the combination with an overshot cylinder and concave located above the saine, of a straw-carrier disposed in rear` of the cylinder, a grate pivote in rear of the cylinder and having rearwardlyextending teeth located over the carrier, and a defiector pivoted in rear of the concave an over the cylinder and directing the material downwardly toward the grate and carrier.

50. In a grain-separator, the combination with a machine-casing having openings in its side walls, of bearing-supports extending across the openings, a shaft, a fan-casing having hubs in which the shaft loosely revolves, one of said hubs being fixed to one of said bearingsu'pp'orts, an overshot threshingcylinder keyed at one end to the shaft and having a bearing at its other end upon the fixed hub, a fan loosely journaled on the shaft within the casing, gearing associated with the shaft and having a clutch connection with the fan for driving the same, a pivoted support located over the cylinder, a concave carried by the support, means for feeding material to the cylinder, a retarderjournaled on the support between the conhaving iingers,. and means for raising and lowering the supand means TTO cave and the feeding' means, means for adjusting and holding the support in adjusted positions, a straw-carrier disposed in rear of the cylinder, a grate pivotally mounted in rear of the cylinder andextending over the carrier, and a deflector for directing material to the grate, said deflector being disposed in rear of the cojicave.

5i. In a grain-separator, the combination with an overshot threshing-cylinder and concave located above the same, of a grain-pan beneath the cylinder, a partition interposed 'disposed beneathy the cylinder `and concave,

toits front epd, and a,deflector extending from the front ortion of the opening down- Wardly and de ivering to the grain-pan, the upper end ofthe delector having a forwardlycurved portion forming a receiving-pocket.

In testimony that I claim the foregoing as Inyown I have hereto axed my s ignsture in the presence of two witnesses.

SAMUEL DUNKELBERGER. Witnesses;

JOHN H. LINN,V PETER P. CARBIENER.

between the cylinder and pan and having a grani-opening, and a deilectorl extendlng from the front portion of the opening down- Ward-1y and rearwardly above the grain-pan.

52: In-a grain-separator, the combination with an overshot threshing-cylinder and concave located above the same, of e grain-pan a partition interposed between the cylinder and pan and havingl a grain-pan contiguous 

